7Leaders

Slow Spiral Screw Machine Drills 135° Self-Centering Split Point

135˚

Uncoated Bright

MG Carbide

15°

Code No: D452-DC

Standard Length Dc h7

Bright D452

Dec. Equiv. Inch

Lc Inch

L Inch

#38 #37 #36 #35 #34 #33 #32 #31 #30 #29 #28 #27 #26 #25 #24 #23 #22 #21 #20 #19 #18 #17 #16 #15 #14 #13 #12 #11 #10

0.1015 13/16 1-13/16 0.1040 13/16 1-13/16 0.1065 13/16 1-13/16

0.1100 0.1110 0.1130 0.1160 0.1200

7/8 7/8 7/8 7/8 7/8

1-7/8 1-7/8 1-7/8 1-7/8 1-7/8

0.1285 15/16 1-15/16 0.1360 15/16 1-15/16 0.1405 15/16 1-15/16

Work Material P H M K N S

0.1440 0.1470 0.1495 0.1520 0.1540

1 1 1 1 1

2-1/16 2-1/16 2-1/16 2-1/16 2-1/16

0.1570 1-1/16 2-1/8 0.1590 1-1/16 2-1/8 0.1610 1-1/16 2-1/8 0.1660 1-1/16 2-1/8 0.1695 1-1/16 2-1/8 0.1730 1-1/8 2-3/16 0.1770 1-1/8 2-3/16 0.1800 1-1/8 2-3/16 0.1820 1-1/8 2-3/16 0.1850 1-1/8 2-3/16 0.1890 1-3/16 2-1/4 0.1910 1-3/16 2-1/4 0.1935 1-3/16 2-1/4 0.1960 1-3/16 2-1/4 0.1990 1-3/16 2-1/4 0.2010 1-3/16 2-1/4

P Steel

H <48HRC

Hardened Steel

M Stainless Steel

K Cast Iron

S Titanium

#9 #8 #7 #6 #5 #4 #3 #2 #1

S Nickel

0.2040 1-1/4 0.2055 1-1/4 0.2090 1-1/4 0.2130 1-1/4

2-3/8 2-3/8 2-3/8 2-3/8

Tolerance: DC All Sizes: h7 Feature of product:

0.2210 1-5/16 2-7/16 0.2280 1-5/16 2-7/16 0.2340 1-5/16 2-7/16

A B

Provide superior wear resistance. For use Stainless Steels, Nickel- based and Titanium Alloys, Aluminium, Cast Iron, Bronze and Magnesium.

0.2380 1-3/8

2-1/2 2-1/2 2-1/2 2-1/2 2-5/8

C 0.2420 1-3/8 D 0.2460 1-3/8

E F

0.2500 1-3/8 0.2570 1-7/6

G 0.2610 1-7/6 2-5/8 H 0.2660 1-1/2 2-11/16 I 0.2720 1-1/2 2-11/16 J 0.2770 1-1/2 2-11/16 K 0.2810 1-1/2 2-11/16 L 0.2900 1-9/16 2-3/4 M 0.2950 1-9/16 2-3/4 N 0.3020 1-5/8 2-13/16 O 0.3160 1-11/16 2-15/16 P 0.3230 1-11/16 2-15/16 Q 0.3320 1-11/16 3 R 0.3390 1-11/16 3 S 0.3480 1-3/4 3-1/16 T 0.3580 1-3/4 3-1/16 U 0.3680 1-13/16 3-1/8 V 0.3770 1-7/8 3-1/4 W 0.3860 1-7/8 3-1/4 X 0.3970 1-15/16 3-5/16 Y 0.4040 1-15/16 3-5/16 Z 0.4130 2 3-3/8

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